How far is Joliet, IL from O'Fallon, IL?
The driving distance from Joliet, IL to O'Fallon, IL is about 253.6 miles (408.1 km), with a travel time of about 04h 46m by car.
- The straight-line flight distance is about 224.5 miles (361.3 km).
- For a round trip, plan for roughly 09h 32m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM CDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 04h 46m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in Illinois, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Joliet and O'Fallon.
Turn-by-Turn Driving Directions
Step-by-step road directions between Joliet and O'Fallon.
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1
Start on the route
34 m · 10 sec
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2
Turn right onto Ottawa Street
1397 ft · 44 sec · Ottawa Street
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3
Continue on Ottawa Street
758 ft · 22 sec · Ottawa Street
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4
Continue on Chicago Street
2079 ft · 1 min · Chicago Street
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5
Take the ramp slight right toward I 80 West: Moline, Rock Island
1707 ft · 42 sec
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6
Merge slight left
6.4 mi · 8 min
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7
Take the exit slight right toward I 55 South: Saint Louis
1900 ft · 54 sec
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8
Merge slight left
93 mi · 1 hr 40 min
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9
Keep slight right to continue on I 55 South: Saint Louis, Springfield
64.8 mi · 1 hr 10 min
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10
Keep slight left to continue on I 55 South: Saint Louis
74.2 mi · 1 hr 20 min
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11
Take the exit slight right toward IL 162: Troy
1302 ft · 32 sec
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12
Keep slight left
141 m · 13 sec
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13
Turn straight onto Edwardsville Road
1.6 mi · 3 min · Edwardsville Road
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14
Turn right onto South Main Street
1.3 km · 1 min · South Main Street
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15
Continue on Troy Ofallon Road
4.2 mi · 7 min · Troy Ofallon Road
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16
Continue on Scott Troy Road
2.2 mi · 4 min · Scott Troy Road
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17
Turn right onto Ofallon Troy Road
1.9 mi · 3 min · Ofallon Troy Road
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18
Continue on O'Fallon Troy Road
120 m · 8 sec · O'Fallon Troy Road
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19
Continue on North Lincoln Avenue
2.5 mi · 4 min · North Lincoln Avenue
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20
Turn right onto West State Street
18 m · 1 sec · West State Street
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21
Arrive at your destination
0 m · 1 sec · West State Street
Car Route Details
A richer read on the saved driving route between Joliet and O'Fallon.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 55 South
Merge slight left
93 mi · 01h 40m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Mostly Sunny leaving Joliet and Mostly Sunny near O'Fallon.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Joliet to O'Fallon?
The road trip is about 253.6 miles (408.1 km) and usually takes 04h 46m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Lincoln is a useful midpoint, sitting about 126.8 miles from Joliet and 126.8 miles from O'Fallon.
How much longer is the road route than the straight-line distance?
The direct path is about 224.5 miles (361.3 km), while the road route adds roughly 29.1 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 6:00 AM to 8:00 AM CDT. If you want a more comfortable same-day return, try to leave by 7:28 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $33.75 one way or $67.50 round trip. Estimated CO2 is about 79.5 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Joliet and Mostly Sunny near O'Fallon.
Stop Ideas Near Lincoln
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Route 66 Original Alignment- Driveable!
City of Lincoln
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Lincoln.
Lincoln
Springfield station
Uptown Station
Peoria, Illinois
Flight Path Map
This map shows the direct air route between Joliet and O'Fallon. Straight-line distance: 224.5 mi (361.3 km).
#1 Joliet
The second most populous city in Will County, Illinois.
| Population | 85,583 |
| Coordinates | 41.5251900, -88.0834000 |
| Altitude | 165 |
| Country | United States |
#2 O'Fallon
Township in St.
| Population | 29,606 |
| Coordinates | 38.5922700, -89.9112100 |
| Altitude | 167 |
| Country | United States |
End: O'Fallon (-89.91121, 38.59227)
Estimated Travel Time
Distance: 408 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 08h 26m |
| 40 mph (64.37 km/h) | 06h 20m |
| 50 mph (80.47 km/h) | 05h 04m |
| 60 mph (96.56 km/h) | 04h 13m |
| 70 mph (112.65 km/h) | 03h 37m |
| 80 mph (129 km/h) | 03h 09m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $33.75 | $67.50 |
| Mid-grade | $4.25 | $38.06 | $76.13 |
| Premium | $4.65 | $41.65 | $83.31 |
| Diesel | $5.30 | $47.47 | $94.94 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Illinois · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.